- Professional Combat Sport Championship Histories -
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| National Boxing Association | ( | 1921-01 | - | 1960-08 | ) |
| World Boxing Association | ( | 1960-08 | - | ) |
* Bolded letters in the competitor's name, if any, indicate the surname/family name.
| Jack Dempsey | 1921-01 | |
| Has won the world title from Jess Willard on 19-07-04 in Toledo, OH, USA; recognized as the world and American champion by NBA in 21-01 upon its inception (The Decatur Herald, Decatur, IL, 21-02-07, plus several other papers). | ||
| Gene Tunney | 1926-09-23 | Philadelphia, PA, USA |
| Vacant on 28-07-31 upon retirement. | ||
| Max Schmeling | 1930-06-12 | Bronx, NY, USA |
| Defeats Jack Sharkey; also recognized officially by NYSAC on 30-06-19 (The Brooklyn Citizen, 30-06-20). | ||
| Jack Sharkey | 1932-06-21 | Long Island City, NY, USA |
| Primo Carnera | 1933-06-29 | Long Island City, NY, USA |
| Max Baer | 1934-06-14 | Long Island City, NY, USA |
| Jim Braddock | 1935-06-13 | Long Island City, NY, USA |
| Joe Louis | 1937-06-22 | Chicago, IL, USA |
| Vacant on 49-02-28 upon (temporary) retirement. | ||
| Ezzard Charles | 1949-06-22 | Chicago, IL, USA |
| Defeats Jersey Joe Walcott and reocognized by NBA; also defeats Joe Louis on 50-09-27 in New York, NY, USA. | ||
| Jersey Joe Walcott | 1951-07-18 | Pittsburgh, PA, USA |
| Rocky Marciano | 1952-09-23 | Philadelphia, PA, USA |
| Vacant on 56-04-27 upon retirement. | ||
| Floyd Patterson | 1956-11-30 | Chicago, IL, USA |
| Defeats Archie Moore and reocognized by NBA. | ||
| Ingemar Johansson | 1959-06-26 | Bronx, NY, USA |
| Floyd Patterson [2] | 1960-06-20 | New York, NY, USA |
| NBA becomes WBA on 62-08-23. | ||
| Sonny Liston | 1962-09-25 | Chicago, IL, USA |
| Wins WBA title; also recognized as the first WBC champion after defeating Floyd Patterson on 63-07-22 in Winchester, NV, USA. | ||
| Cassius Clay / Muhammad Ali | 1964-02-25 | Miami Beach, FL, USA |
| Wins WBA and WBC titles; changes his name to Muhammad Ali in 64-03; stripped of the title in 65 for not facing Liston in a rematch | ||
| Ernie Terrell | 1965-03-05 | Chicago, IL, USA |
| Defeats Eddie Machen. | ||
| Muhammad Ali [2] | 1964-02-25 | Miami Beach, FL, USA |
| Stripped of the title on 67-04-28 when Ali refuses induction into the United States Army. | ||
| Jimmy Ellis | 1968-04-27 | Oakland, CA, USA |
| Defeats Jerry Quarry in tournament final. | ||
| Joe Frazier | 1970-02-16 | New York, NY, USA |
| George Foreman | 1973-01-22 | Kingston, JAM |
| Muhammad Ali [2] | 1974-10-30 | Kinshasa, ZAI |
| Leon Spinks | 1978-02-15 | Las Vegas, NV, USA |
| Muhammad Ali [3] | 1978-09-15 | New Orleans, LA, USA |
| Vacates on 79-10-18 upon (temporary) retirement. | ||
| John Tate | 1979-10-20 | Pretoria, RSA |
| Defeats Gerrie Coetzee. | ||
| Mike Weaver | 1980-03-31 | Knoxville, TN, USA |
| Michael Dokes | 1982-12-10 | Paradise, NV, USA |
| Gerrie Coetzee | 1983-09-23 | Richfield, OH, USA |
| Greg Page | 1984-12-01 | Sun City, RSA |
| Tony Tubbs | 1985-04-29 | Buffalo, NY, USA |
| Tim Witherspoon | 1986-01-17 | Atlanta, GA, USA |
| James Smith | 1986-12-12 | New York, NY, USA |
| Mike Tyson | 1987-03-07 | Las Vegas, NV, USA |
| Buster Douglas | 1990-02-11 | Tōkyō, JPN |
| Evander Holyfield | 1990-10-25 | Las Vegas, NV, USA |
| Riddick Bowe | 1992-11-13 | Las Vegas, NV, USA |
| Evander Holyfield [2] | 1993-11-06 | Las Vegas, NV, USA |
| Michael Moorer | 1994-04-22 | Las Vegas, NV, USA |
| George Foreman [2] | 1994-11-05 | Las Vegas, NV, USA |
| Stripped after refusing to fight Tony Tucker. | ||
| Bruce Seldon | 1995-04-08 | Las Vegas, NV, USA |
| Defeats Tony Tucker. | ||
| Mike Tyson [2] | 1996-09-07 | Las Vegas, NV, USA |
| Evander Holyfield [3] | 1996-11-09 | Las Vegas, NV, USA |
| Also wins IBF World Title on 97-11-08. | ||
| Lennox Lewis | 1999-11-13 | Las Vegas, NV, USA |
| Wins WBA, IBF, and vacant IBO world titles; stripped of WBA title on 00-04-29 after agreeing to fight WBC challenger Michael Grant instead of John Ruiz, WBA's top contender. | ||
| Evander Holyfield [4] | 2000-08-12 | Las Vegas, NV, USA |
| Defeats John Ruiz. | ||
| John Ruiz | 2001-03-03 | Las Vegas, NV, USA |
| Roy Jones Jr. | 2003-03-01 | Paradise, NV, USA |
| Vacates on 04-02-20 when Jones moves back down to light heavyweight class. | ||
| John Ruiz [2] | 2004-02-20 | |
| Interim champion since defeating Hasim Rahman on 03-12-13 in Atlantic City, NJ, USA; status promoted on 04-02-20. | ||
| Nikolai Valuev | 2005-12-17 | Berlin, GER |
| Ruslan Chagaev | 2007-04-14 | Stuttgart, GER |
| Declared Champion in Recess; stripped on 08-07-18 for not agreeing to a rematch with Valuev. | ||
| Nikolai Valuev [2] | 2008-08-30 | Berlin, GER |
| Defeats John Ruiz. | ||
| David Haye | 2009-11-07 | Nuremberg, GER |
| Promoted to the "Super" champion for fighting Wladimir Klitschko, IBF, WBO, and IBO champion, on 11-07-02. | ||
| Wladimir Klitschko | 2011-07-02 | Hamburg, GER |
| IBF, WBO, and IBO champion, defeats Haye to win WBA Super title; Alexander Povetkin wins WBA "Regular" world title on 11-08-27. | ||
| Tyson Fury | 2015-11-28 | Düsseldorf, NW, GER |
| Wins WBA, IBF, WBO, and IBO world titles; stripped of IBF title on 15-12-08; vacates other titles on 16-10-12 after cancelling his rematch with Wladimir Klitschko for the second time due to depression caused by a positive test for cocaine. | ||
| Anthony Joshua | 2017-04-29 | London, ENG, GBR |
| IBF world champion, defeats Wladimir Klitschko to win vacant WBA and IBO world titles; also wins WBO World Title on 18-03-31. | ||
| Andy Ruiz Jr. | 2019-06-01 | New York, NY, USA |
| Wins WBA, IBF, WBO, and IBO world titles. | ||
| Anthony Joshua [2] | 2019-12-07 | Diriyah, KSA |
| Wins WBA, IBF, WBO, and IBO world titles. | ||
| Oleksandr Usyk | 2021-09-25 | London, ENG, GBR |
| Wins WBA, IBF, WBO, and IBO world titles; also defeats WBA "Regular" world champion Daniel Dubois on 23-08-26; also wins WBC World Title on 24-05-18; vacates IBF title on 24-06-26. | ||
